My uncle has a Helix 7 on the bow and we cannot get it to work with his Ultrex for reading depth. I have always had Lowrance, so I have limited help for him. When he hooks the transducer that came with the unit up on a stick and puts it in the water it works perfectly. With the Ultrex transducer, the depth bounces between 1.6 and 682 feet type thing and that is regardless if in 4 foot of water or 20 foot.

Please help so we can get him fixed up.

Thank you!
Steve